Earpiece



Oct. 29, 1929.

F. H. C OOLBROTH EARPIECE Filed Dec. 24, 1926 w J 0 r A nw/ M0 W m I Patented Oct. 29, 1929'.

. shape and tion 7 which UNITED STATES PATENT OFFICE FRANK TRIO YORK y i H. GOOLBBOTH, OF BRIMFIELD, MASSACHUSETTS; ASSIGNOR TO WESTERN ELEC- COMPANY, INCORPORATED, OF NEW YORK, N. Y., A. CORPORATION 01 NEW EARPIEGE Application filed December 24, 1926. Serial No. 156,840.

structure have enabled the production of' compact inconspicuous but highly efiicient receivers which are well adapted for use in audiphone and head sets.

Due to the compactness and lightness of the receiver structure it may be easily supported by the ear structure and it is the object of this invention to provide a supporting means for the receiver which will securely support it in operative relation to the ear without user. I

In accordance with the general plan of the invention, an ear-piece is formed with such contour that theact of inserting. it into the ear involves a twisting or turning action which causes it to become securely yet lightly engaged with various contours of the car from which it may not be easily dislodged except by a twisting or turning movement in a direction opposite to the inserting move ment. i

In the drawings illustrating this invention, Fig. 1 is a side view-of the human ear illustrating the ear piece of this invention in two positions;

Fig. 2 is an inner side View of the ear piece with the telephone attached thereto;

Fig. 3 is a side perspective View; and Fig. 4 is a sectional view of the ear piece with the receiver attached.

The form of the ear piece is best illustrated in Figs. 2 and 3 in which 5 designates an e larged body portion somewhat conical in having a substantially right -angle portion 7 as illustrated in Fig. 2 of the drawing is adapted to engage with the meatus 10 of the humanear to help retain the ear piece in place. A rounded portion 8 on the ear piece is adapted to engage a depression in-the ear and cooperates with the hook portion engaging the bend in the meatus for "retaining the ear piece fitmly in position.

discomfort or. inconvenience to the angular projection at its smaller end adapted the 6 which terminates in a hook por- The ear piece is provided with a channel 12 for conveying vibrations from a diaphragm of a receiver 13 attached thereto to the ear drum. The form taken by this ear piece is such that the insertion of it into the ear is brought about by a turning motion which brings the hook portion 7 into engagement with the bend 11 1 the meatus of the ear and the rounded portion into engagement with a depression in the ear. lVhen the ear piece is seated in this manner it is held firmly against displacement except by a turning movement opposite to that for inserting it into the ear of the user.

The advantage of an ear piece of this coninsures against discomfort to the wearer and at the sametime provides a firm although light seating for the apparatus.

What is claimed is:

1. In combination, a telephonic receiver, and an ear piece comprising a body having a projection adapted to engage the bend in the meatus of the ear and an enlarged portion adapted to engage the depression (antihelix) of the ear to hold the receiver against dislod-gment.

2. In combination, a telephonic receiver, and an ear piece, the ear piece vcomprisinga rounded and tapered body portion having an to engage over the bend in the meatus o ear when the larger end of the ear piece is m engagement with a depression of the ear .to hold the receiver against dislodgment.

In witness whereof, I have hereunto subscribed my name this 4th day of December,

A. D. 1926. o

- FRANK H. OOOLBROTH. 

